* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: sans-serif;
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    background-color: #FFFFFF;
    color: white;

}

nav{
   background-color: #29AAE1 ;
   height:50px;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 20px;
    padding:10px 10px;
}

nav a {
    color: white;
    text-decoration: none;
}

main {
    display: flex;
    flex: 1;
    padding: 20px;
    background-color: #f9f9f9;
    gap: 20px;
}

section {
    flex: 3;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

article {
    background-color: #FFFFFF;
    padding: 15px;
    border: 1px solid #FFFFFF;
    width: calc(100% / 4 - 14px);
    text-align: center;
}
.compra{
    background-color: #FFFFFF;
    padding: 15px;
    border: 1px solid #FFFFFF;
    width: calc(100% / 2 - 14px);
    text-align: center;

}


aside {
    flex: 1;
    background-color: #FFFFFF;
    padding: 20px;
    border: 1px solid #ccc;
}

footer {
    background-color: #222;
    color: white;
    padding: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-left, .footer-right {
    flex: 1;
}

.footer-right form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

input, textarea {
    padding: 8px;
    border: none;
    border-radius: 4px;
}

button {
    padding: 10px;
    background-color: #0077cc;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 4px;
}